Muscle
Trending Questions
Which one of the following is the correct pairing of a body part and the kind of muscle tissue which moves it?
Heart wall - Involuntary unstriated muscle
Iris - Involuntary smooth muscle
Biceps of upper arm - Smooth muscle fibers
Abdominal wall - Skeletal muscle
Reason(R): Cardiac muscle fibres are branched and joined by intercalated discs at some fusion points.
Choose the correct option.
Why do muscles have to work in pairs to move the bones at a joint?
Thick and thin filaments form the __________. The thick and thin filaments overlap and form a definite pattern that form units called______.
Myofibrils and sarcomere
Sarcomere and Myofibrils
Fascia and fascicle
Fascicle and Fascia
What percent of the total body weight of an adult humans is made up of muscle?
40 - 50 %
30 - 40 %
60 - 70 %
45 - 55 %
Arrange the changes during muscle activation as they happen
1. Calcium level increases.
2. Calcium level decreases.
3. Troponin and tropomyosin move to allow myosin to bind to actin.
4. The cross bridge cycle begins.
1, 3, 4, 2.
2, 4, 3, 1.
4, 3, 2, 1.
1, 2, 3, 4.
Coelom is lined by:
Ectoderm
Endoderm
Mesoderm
All of these
- Joint capsule and Whartons jelly
- Periosteum and endosteum
- Ligament and tendons
- Pericardium and heart valves